On Tue, Apr 02, 2024 at 09:50:54AM +0800, Ubisectech Sirius wrote: > > On Mon, Apr 01, 2024 at 03:04:46PM +0800, Ubisectech Sirius wrote: > > Hello. > > We are Ubisectech Sirius Team, the vulnerability lab of China ValiantSec. > > Recently, our team has discovered a issue in Linux kernel 6.7. Attached to > > the email were a PoC file of the issue. > > > Thank you for the report! > > > I tried to compile and run your test program for about half an hour > > on a virtual machine running 6.7 with enabled KASAN, but wasn't able > > to reproduce the problem. > > > Can you, please, share a bit more information? How long does it take > > to reproduce? Do you mind sharing your kernel config? Is there anything > > special > > about your setup? What are exact steps to reproduce the problem? > > Is this problem reproducible on 6.6? > > Hi. > The .config of linux kernel 6.7 has send to you as attachment. And The > problem is reproducible on 6.6.
Can you please share the reproducer of this issue? > > > It's interesting that the problem looks like use-after-free for the objcg > > pointer > > but happens in the context of udev-systemd, which I believe should be > > fairly stable > > and it's cgroup is not going anywhere. > > > Thanks! >
